HarmanKardon-FL8550-cd-sm维修电路原理图.pdf

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1、 harman/kardon Model FL8550 5 Disc Compact Disc Changer Service Manual CONTENTS LASER BEAM/SAFETY PRECAUTIONS . 2 SPECIFICATIONS . . 4 CONTROLS. 5 REAR PANEL CONNECTIONS. 6 REMOTE CONTROL. . 7 TROUBLE SHOOTING GUIDE . 8 SERVICE BULLETIN H/K9901. 9 SERVICE BULLETIN H/K2000-09. 10 TECH TIP HKTT2003-06

2、. 11 DISASSEMBLY INSTRUCTIONS . 12 EXPLODED VIEWS. 17 ADJUSTMENT PROCEDURES.21 AUDIO TEST PROCEDURE.25 CIRCUIT DESCRIPTIONS .27 I.C. SPECIFICATIONS . 35 ELECTRICAL PARTS LIST . 61 MECHANICAL PARTS LIST . 67 TROUBLESHOOTING FLOW CHARTS. 68 BLOCK DIAGRAM . 73 PCB LAYOUTS .74 SCHEMATIC DIAGRAMS . . 78

3、PACKING. 83 harman/kardon, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 Rev1 11/2003 RadioFans.CN 收音机爱 好者资料库LASER BEAM SAFETY PRECAUTIONSCLASS 1 LASER PRODUCTCAUTIONInvisible laser radiation when the unit is open.Do not stare into beam.CAUTION: USE OF ANY CONTROLS, ADJUSTMENT, ORPROCEDURES O

4、THER THAN THOSE SPECIFIED HEREINMAY RESULT IN HAZARDOUS RADIATION EXPOSURE.Do not look directly at the laser beamcoming from the pickup or allow it tostrike against your skin.This compact disc player uses a pickup that emits a laser beam. The laser beam is emitted from thelocation shown in the figur

5、e. When checking the laser diode, be sure to keep your eyes at least 1 foot awayfrom the pickup lens when the diode is turned on. Do not look directly at the laser beam.CAUTION:Using controls and adjustment, or doing procedures other than those specified herein, may result inhazardous radiation expo

6、sure.2FL8550RadioFans.CN 收音机爱 好者资料库SAFETY PRECAUTIONSThis symbol is intended to alert the user tothe presence of uninsulated dangerousvoltage within the products enclosure thatmay be of sufficient magnitude to consti-tute a risk of electric shock to persons.This symbol is intended to alert the user

7、tothe presence of important operating andmaintenance (servicing) instructions in theliterature accompanying the appliance.Caution:To prevent electric shock do not use this(polarized) plug with an extension cord, recep-tacle or other outlet unless the blades can befully inserted to prevent blade expo

8、sure.Attention: Pour prevenir les chocs electriques ne pasutiliser cetre fiche polarisee avec unprolongateur, une prise de courant ou une au-tre sortie de courant, sauf si les lames preventetre inserees a fond-sans en laisser aucunepartie a decouvert.HANDLING LASER PICKUPThe laser diode in the optic

9、al system of this player can be damaged by electrostatic discharge fromyour clothes or your body. Proper electrostatic grounding for service personal is required during servicing.BEFORE REPAIRING THE COMPACT DISC PLAYERPreparationHuman Body Grounding:Many of the components used in this compact disc

10、player, including the laser pickup, are sensitive toelectrostatic discharge. Service personal should be grounded with an electrostatic armband (1 Mohm).Caution:Static charge on clothing does not escape through a body grounding wrist band.Be careful not to contact the pickup or electrical components

11、with your clothing.Workbench and Tool Grounding:A properly-grounded electroconductive plate (1Mohm) or metal sheet should be fitted to the workbenchsurface. Tools and instruments (such as soldering irons and scopes) should be grounded to prevent ACleakage.Note: Laser diodes are so susceptible to dam

12、age from static electricity that, even if a static discharge doesnot ruin a diode, it can shorten its life or cause it to work improperly.WARNINGTo prevent fire or shock hazard, do notexpose the unit to rain or moisture.3FL8550GENERAL INFORMATION1.Power ConsumptionOperating 18W; Standby 5W2.Power Su

13、pply230VAC 50Hz or 120VAC 60Hz3.Dimensions440 x 130 x 386 mm4.Product OutlookRefer to attached diagram5.Remote UnitRT03, harman/kardon remote code6.Compliance RequirementCE LVD EN60065CE EMC EN55013, EN61000-3-2, EN61000-3-3NRTL/CFCCHDCD7.Disc Changer Mechanism5 disc carousel; Play 1 change 48.Sound

14、 ProcessorHDCD9.CD Servo SystemAuto AlignmentAUDIO SPECIFICATIONTypicalLimitOutput Level 1KHz 0 dB(no HDCD)2.0 Vrms 1 dBFrequency Response 20Hz20KHz reference 1KHz+0-0.5 dB+0.5-1 dBTHD 1KHz 0 dB 30KHz LPF0.004%0.01%THD 20Hz20KHz 0 dB 30KHz LPF0.015%S/N 1KHz 0 dB A-weighted105 dB100 dBDynamic Range10

15、0 dB95 dBChannel Seperation 1KHz 0 dB95 dB90 dBChannel Balance 0.5 dB 1 dBDe-emphasis 0.5 dB 1 dBMaximum Headphones Level 1KHz 0 dB 32 ohm Load1.5 Vp-p 2 dBBlack Dot TCD725A1000 m600 mInterruption MCD-131900 m600 mFinger Print TCD725A75 m65 mVertical Deviation MCD-1511.00 mm0.92 mmEccentricity TCD71

16、2140 m140 m8 cm disc TCD783Last TrackLast TrackAccess Time 1st to last track YEDS184 sec10 secFL855074Power SwitchStatus Mode Indicator Information DisplayStatus Mode IndicatorHeadphones JackHeadphones LevelHeadphones Jack CD DrawerOpen/ CloseTime ButtonRepeat ButtonIntro ButtonClear ButtonProgram B

17、uttonOpen/ CloseRandom ButtonPause ButtonPlay ButtonStop ButtonSkip ButtonSearch ButtonDisc Skip ButtonDisc Select ButtonsInformation DisplayRemote Sensor: Press this switch to change the FL8550 from STANDBY to ON. When the unit is first connected to AC power, the will turn Amber (STANDBY mode). Pre

18、ss this switch to turn the unit ON; indicator will Green and the will illuminate. Press the switch again to turn the unit off, in STANDBY mode. When the FL8550 is connected to a switched AC outlet, such as those found on the back of many audio products, when power is applied it will return to whatev

19、er state it was left in previously, whether ON or STANDBY. In this case, when always left ON, further use of the power switch is not needed.: When the FL8550 is in the ON mode, this indicator will glow green. When the unit is off, the indicator will glow amber, indicating that the unit is still conn

20、ected to the AC mains supply.: Connect a set of standard headphones to this jack for private listening.: Turn this knob to increase or decrease the volume level for headphones connected to the FL8550s . Note that changing this level will not change the sound level for the units main output, as that

21、remains constant.: This drawer holds the discs that will be played. Press the button to open the drawer so that discs may be inserted.: In normal operation, this display will show the running time of the track being played. Press the button once to check the time remaining for the track in play. Pre

22、ss this button again to view the total play time remaining for the disc in play. : Press this button once to constantly repeat the track currently being played. Press it a second time to repeat the entire disc.: Press this button to put the FL8550 in the Intro Scan mode. When you press the button, t

23、he unit will play the first 10 seconds of each track on the disc, and then move to the next track. Press the button again to defeat the function and continue full play of the current track.: Press this button to remove tracks from a programmed sequence. Each press of the button will remove one track

24、, starting with the last track programmed to play.: This button is used to program the playback of a disc in a particular order.: Press this button to open or close the disc drawer. DO NOT push the drawer to close it, or damage to the transport mechanism may result.: Press this button to put a disc

25、into play, and to have all of the tracks played in a random order.: Press this button once to momentarily pause a disc. When the button is pressed again, the disc will resume play at the point it was paused.: Press this button to start the playback of a CD. If the CD drawer is open, pressing this bu

26、tton will automatically close the drawer.: Press this button to stop the disc currently being played.: Press either side of this button to move to the next track , or to move back to the previous track on the disc being played.: Press either side of this button to search forward or backwards through

27、 a disc to locate a particular portion of the selection of the disc being played.: Press this button to change to the next disc. If a disc position is empty, the FL8550 will automatically search for the next position that contains a disc.: Press one of these buttons to select the disc in a specific

28、position in the CD drawer.: This display provides details about the operation of the FL8550.: The sensor behind this window receives commands from the remote control. Keep this area clear if you wish to use the FL8550 with a remote control.PowerPhonesPhones LevelFL 8550TimeRepeatIntroClearProgramOpe

29、n/ClosePausePlaySkipStopRandomSearch321Disc Skip54MININTRODISCTRACK13245SEC1616112717123818134919145102015REPEAT 1A-BRANDOMALL 1 DISCSPROGRAM1133322244556678910111111101515161719202020212112121313141418Front Panel Controls1789161718194FL855022HDCD Indicator: This LED will light automatically when a

30、CD with HDCD encoding is playing.225MADE IN CHINAMODEL NO: FL8550HARMAN KARDONNORTHRIDGECALIFORNIA, U.S.A.AC 117V / 60Hz20WAC INPUT This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:(1) This device may not cause harmful interference, and (2) this

31、 device must accept any interference received, including interference that may cause undesired operation.NRTL/CCSA 22.2LR46800UL 1270LEFTRIGHTINOUTAUDIO OUTPUTREMOTEDIGITALOUTPUTWARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.PRODUCT COMPLIES W

32、ITH DHHSRULES 21CFR SUBCHAPTER J,APPLICABLE AT DATE MANUFACTURED:(YCL).SERIAL NO.SHOCK HAZARD : DO NOT OPEN.AVIS:RISQUE DE CHOC ELECTRIQUE-NE PAS OUVRIR.SHOCK HAZARD : DO NOT OPEN.AVIS:RISQUE DE CHOC ELECTRIQUE-NE PAS OUVRIR.CAUTIONRISK OF ELECTRIC SHOCKDO NOT OPENRISK OF ELECTRIC SHOCKDO NOT OPEN24

33、531Rear Panel ConnectionsConnect this plug to an AC outlet. If the outlet is switch is controlled, make certain that the switch is in the ON position.Connect this jack to the coaxial digital input of an external digital-to-analog converter for direct access to the digital signals of the FL8550. DO N

34、OT connect this jack to the standard audio inputs of any device.Connect the output of a remote infrared sensor or the remote control output of another compatible Harman Kardon product. This will enable the remote control system to operate even when the front panel is blocked. It will also allow use

35、of the FL8550 with optional, external control systems.Connect this jack to the input of another compatible Harman Kardon remote controlled device to have the remote sensor on the FL8550 provide signals to other products.Connect these jacks to the CD audio inputs of your receiver, surround processor

36、or preamplifier.AC Power CordCoaxial Digital OutputRemote Control InputRemote Sensor Remote Control OutputFixed Audio Outputs21124535FL85506. Press this button to open or close the disc drawer. The drawer may also be closed by pressing the button . DO NOT push the drawer, as damage to the transport

37、mechanism may result. Press one of these buttons to select the disc in a specific position in the CD drawer. Press these buttons to select a specific track on a disc. The FL8550 will immediately search for the track and begin to play it. For tracks 1 through 10 on a disc, you need only press the des

38、ired number. For tracks 10 and above, press the button to select the first digit of the track number, and then press the second digit from these numeric buttons. These buttons are also used to enter track numbers into the memory for pre-programmed play lists. Press this button to select the first di

39、git of a track number above 10. Each press of the button increases the first digit one increment. Press it once to start accessing tracks 10 through 19 twice to start accessing tracks 20 through 29, and so forth. For example, to select track 22, press the button twice, and then press the button . Pr

40、ess these buttons to search forward or backwards through a disc to locate a particular portion of the selection being played. Press one of these buttons to move to the next track , or to move back to the previous track on the disc being played. Press this button to stop the disc currently being play

41、ed. Press this button to start the playback of a CD. If the CD drawer is open, pressing this button will automatically close the drawer. Press this button to put a disc into play, and to have all of the tracks played in a random order. Press this button once to momentarily stop a disc. When the butt

42、on is pressed again, the disc will resume play at the point it was stopped. Press this button to put the FL8550 into the Intro Scan mode. When you press this button, the unit will play the first 10 seconds of each track on the disc, and then move to the next track. Press the button again to defeat t

43、he function and continue full play of the current track. Press this button to select the time display. In normal operation, the display will show the running time of the track being played. Press the button once to check the time remaining for the track in play. Press the button a third time to view

44、 the total play time remaining for the disc in play. Press this button to remove tracks from a programmed sequence. Each press of the button will remove one track, starting with the last track programmed to play. This button is used to program the playback of a disc in a particular order. Press this

45、 button once to constantly repeat the track currently being played. Press it a second time to repeat the entire disc. Press this button to change to the next disc. If a disc position is empty, the FL8350 will automatically search for the next position that contains a disc.Open/ Close Button:PlayDisc

46、 Select Buttons:Numeric Buttons:10+10 Button:+102Search Buttons:Skip Buttons:Stop Button:Play Button:Random Button:Pause Button:Intro Button:Time Button:Clear Button:Program Button:Repeat Button:Disc Skip Button:PROGRAM321456CLEARTIME98745DISC SKIPREPEAT10+10INTRORANDOMSEARCHSKIPDISC NO.123OPEN/CLOS

47、E12456378910111213141516FL 8550Remote Control Functions24456331418789101112131415166FL85507Troubleshooting Guide16SYMPTOMNo lights on front panelRemote does not appear to operate Front panel lights, but CD does not playPlay indicator lights, but no sound is heardSound skips or stutters during playSo

48、und is continually distortedCAUSE No AC power Main Power Switch turned off Weak batteries Blocked sensor Disc upside down Moisture inside unitPoor connections Wrong source selected Disc may be damaged Surface vibrations Incorrect inputSOLUTION Make certain that the AC power cord is plugged into a li

49、ve outlet. Turn on Main Power Switch. Install fresh batteries, observing polarity indications. Remove obstructions from the front panel sensor orconnect a remote sensor to the Remote Injackon the rear panel. Reload disc with label side facing up. Leave the unit turned ON for 30 minutes to allowmoist

50、ure to evaporate. Make certain connections are secure and madeto the correct (e.g., CD) input. Select CD source on receiver or preamp. Try another disc. Isolate the unit from vibration by placing it on afirm surface or move it further away from speakers. Make certain that the FL8550 is connected to